> Richard P wrote:
> If used in equipment, often they are most reliable if mounted "terminals
> up" as vibration can cause internal movement and shorts etc. (Sometimes
> this is buried in the data sheets but it can be hard to spot). Normally in
> use they are also fitted with a discharge resistor as a safety measure as
> well.
>
I can attest to the usefulness of BOTH of those points!   I remember a power
supply that DEC manufactured c. 1970, which put out 5v @"a gazillion" amps
:^).
It used 5 (count 'em!) 150,000uF monsters rated at 15v paralled together!
The
inrush current upon startup was killer!   Early lesson learned was:
high-value,
low-wattage bleeder resistors were *mandatory*, if for no other reason than
to keep the manufacturing techs from having the crap scared out of them when
they went poking around in there!!
Another way to look at the safety issue is: even though it's only 5V... it
can still
melt a screwdriver tip before you can get away from it!  Give it the same
respect
that you'd give 110VAC, and you'll be fine!

Jim-who's-melted-several-screw-drivers!



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